<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        class pres {
            name = "helllo"
            #age = 15

            getage() {
                console.log(this.#age);
            }
            setage(age) {
            this.#age=age
            }
        }
        let p = new pres();
        p.setage(50)
        p.getage()


    </script>
</body>

</html>